added api for ai; got backend working

src-tauri/src/background_removal.rs

@@ -0,0 +1,66 @@
+use std::process::Command;
+use serde_json;
+use serde::{Deserialize, Serialize};
+
+#[derive(Serialize, Deserialize, Clone, Debug)]
+pub struct BackgroundRemovalStatus {
+    pub available: bool,
+}
+
+#[derive(Serialize, Deserialize, Clone, Debug)]
+pub struct BackgroundRemovalResult {
+    pub output_path: String,
+}
+
+/// Check if background removal is available
+pub fn is_available() -> Result<bool, String> {
+    let python_exe = crate::paths::python_exe();
+    let python_exe = python_exe.to_str().unwrap_or_default();
+    let script_path = crate::paths::backend_script("background_removal.py");
+    let script_path = script_path.to_str().unwrap_or_default();
+
+    let output = Command::new(python_exe)
+        .args(&[script_path, "is_available"])
+        .output()
+        .map_err(|e| format!("Failed to run Python script: {}", e))?;
+
+    if !output.status.success() {
+        let stderr = String::from_utf8_lossy(&output.stderr);
+        return Err(format!("Python script failed: {}", stderr));
+    }
+
+    let stdout = String::from_utf8_lossy(&output.stdout);
+    let result: BackgroundRemovalStatus = serde_json::from_str(&stdout.trim())
+        .map_err(|e| format!("Failed to parse JSON: {}", e))?;
+
+    Ok(result.available)
+}
+
+/// Remove background on export (placeholder for Phase 5)
+pub fn remove_background_on_export(
+    input_path: &str,
+    output_path: &str,
+    replacement: &str,
+    replacement_value: &str,
+) -> Result<String, String> {
+    let python_exe = crate::paths::python_exe();
+    let python_exe = python_exe.to_str().unwrap_or_default();
+    let script_path = crate::paths::backend_script("background_removal.py");
+    let script_path = script_path.to_str().unwrap_or_default();
+
+    let output = Command::new(python_exe)
+        .args(&[script_path, "remove_background_on_export", input_path, output_path, replacement, replacement_value])
+        .output()
+        .map_err(|e| format!("Failed to run Python script: {}", e))?;
+
+    if !output.status.success() {
+        let stderr = String::from_utf8_lossy(&output.stderr);
+        return Err(format!("Python script failed: {}", stderr));
+    }
+
+    let stdout = String::from_utf8_lossy(&output.stdout);
+    let result: BackgroundRemovalResult = serde_json::from_str(&stdout.trim())
+        .map_err(|e| format!("Failed to parse JSON: {}", e))?;
+
+    Ok(result.output_path)
+}